Fletcher w



(No Model.) v P. W. HEWES.

ROTARY CUTTER.

No. 343,174. Patented June 8, 18.86,

(yTIVESSES WW I UNITED STATES PATENT OFFICE.

FLETCHER \V. HEWES, OF NE\V YORK, N. Y.

ROTARY CUTTER.

SPECIFICATION forming part of Letters Patent No. 343,174, dated June 8,1886.

Application filed June 24,1885. Serial No. 169,632. (No model.)

To all whom, it may concern.-

Be it known that I, FLETcHER W. HEwEs, of the city, county, and State ofNew York, have invented a new and useful Improvement 5 in RotaryGutters, of which the following is a specification.

My invention relates to a rotary cutter for forming a groove or roundedchannel in the material operated upon, andniore especially adapted anddesigned for producing rounded nicks or depressions in the edges of theleaves of a book to enable the latter to be conveniently opened atcertain predetermined places.

The invention consists in the construction I of the cutter, moreparticularly hereinafter set forth.

In the accompanying drawings, Figure 1. is a side elevation of myimproved cutter. Fig. 2 is an edge view of the same from the side,

and Fig. 3 is an edge View from above. Fig. 4 is a sectional view on theline a: w of Fig.1.

Similar letters of reference indicate like parts.

A is the body or disk of the cutter, which 2 is mounted on a shaft, B,rotated by any suitable means in the bearings G O. A part of theperiphery of the disk A is cut away, so that the arc-shaped portion D ofthe periphery of less curvature is produced. In the edge of the portionD is formed a depression or groove, E, and to the disk A, anu extendingtransversely over said groove E, is detachably secured by screws F, orby any other convenient means, the cutting-blade G. The operating edge Hof this blade is rounded and inclined, as shown. The groove E in frontofsaid edge is straight, but its rear portion is turned or directed toone side, as shown at I.

I11 operation the cutter is rotated in the direction of the arrow inFig. 1, and during its operation it is brought up to the work or thework is moved up to it, as may be desired. The cuttingedge H, by reasonof its inclination, makes a shearing cut, and by reason of its curvatureproduces a rounded depression or channel.

Abundant opportunity is afforded for the escape of the material removedthrough the space included between the blade and the bottom of thegroove E. The rear end of said groove E is directed or turned so as tothrow out the shavings in a sidewise direction and to preventtheiraccumulation directly beneath the cutter.

The blade G may be easily removed for regrinding or repair.

I find this construction of cutter especially suitable for making aclean deep groove in masses of pape'rsuch, for example, as the edges ofthe leaves of a bookand to this end I have embodied it in anindexing-machine, for which I have made application for Letters Patent,No. 169,633, filed June 24, 1885, and simultaneously herewith. It mayalso be used advantageously for cutting grooves in wood or in any othermaterial adapted to be acted upon by the cutting-edge.

I claim as my invention- 1. In a rotary cutter, the combination of thebody A, having a portion, D, of its periphery of less curvature than theremaining portion,

. a groove or channel being formed in said portion D, and acutting-blade extending across said groove and secured to said body,substantially as described.

2. In a rotary cutter, the combination of the disk A, having a portion,D, of its periphery of less curvature than the remaining portion, agroove or channel being formed in said portion D, and a cutting-bladehaving its operating edge inclined and its body curved and extendingacross said groove and detachably secured to said disk, substantially asdescribed.

3. In a rotary cutter, the combination of the body A, having a portion,D, of its periphery of less curvature than the remaining portion, agroove or channel being formed in said portion D, the said groove havingits rear extremity turned or directed to one side, and a cutting-bladeextending transversely across said groove and secured to said body,substantially as described.

F. \V. HEWES.

Witnesses:

DANIEL H. DRISOOLL, PARK BENJAMIN.

